Wilson Stream Reservoir Report
Nearby: Wilson Pond Little Moose
Last Updated: December 18, 2025
Wilson Stream, located in Piscataquis, Maine, is a private hydroelectric dam constructed in 1920 with a primary purpose of generating power.
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Summary
The dam stands at 36 feet tall with a hydraulic height of 30 feet and a length of 150 feet, holding a storage capacity of 20,070 acre-feet. Despite its age, the dam has a low hazard potential but is rated as having poor condition as of the last assessment in October 2019.
Managed by the Maine Emergency Management Agency, Wilson Stream is state-regulated with permitting, inspection, and enforcement in place to ensure its safety and compliance. Although it has not undergone recent modifications, the dam is equipped with emergency action plans and has a designated inspection frequency. With its location on Big Wilson Stream, the dam plays a crucial role in the area's water resources and climate, making it a point of interest for enthusiasts in the field.
Overall, Wilson Stream presents an intriguing case study for water resource and climate enthusiasts, showcasing the intersection of hydroelectric power generation, regulatory oversight, and dam safety. As a historic structure with a significant storage capacity, the dam's condition and management provide valuable insights into the challenges and opportunities in balancing energy production with environmental stewardship in the face of changing climate conditions. Its presence on Big Wilson Stream adds to its importance as a focal point for understanding the dynamics of water resources in the region and the role of infrastructure in shaping the landscape.
Year Completed |
1920 |
Dam Length |
150 |
Dam Height |
36 |
River Or Stream |
Big Wilson Stream |
Primary Dam Type |
Concrete |
Surface Area |
7 |
Hydraulic Height |
30 |
Nid Storage |
20070 |
Structural Height |
36 |
Hazard Potential |
Low |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Piscataquis River At Blanchard
|
67cfs |
Kingsbury Stream At Abbot Village
|
60cfs |
Piscataquis River Near Dover-Foxcroft
|
341cfs |
Kennebec River At The Forks
|
660cfs |
Austin Stream At Bingham
|
55cfs |
Kennebec River At Bingham
|
1990cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Wilson Stream